US20190232379A1 - Cutting tool and method of manufacturing machined product using them - Google Patents
Cutting tool and method of manufacturing machined product using them Download PDFInfo
- Publication number
- US20190232379A1 US20190232379A1 US16/337,464 US201716337464A US2019232379A1 US 20190232379 A1 US20190232379 A1 US 20190232379A1 US 201716337464 A US201716337464 A US 201716337464A US 2019232379 A1 US2019232379 A1 US 2019232379A1
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- US
- United States
- Prior art keywords
- screw
- cutting tool
- flow path
- thread
- screw thread
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
- B23B27/10—Cutting tools with special provision for cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B29/00—Holders for non-rotary cutting tools; Boring bars or boring heads; Accessories for tool holders
- B23B29/04—Tool holders for a single cutting tool
- B23B29/12—Special arrangements on tool holders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/06—Drills with lubricating or cooling equipment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2250/00—Compensating adverse effects during turning, boring or drilling
- B23B2250/12—Cooling and lubrication
Definitions
- the present disclosure relates to a cutting tool and a method of manufacturing a machined product using the cutting tool.
- a cutting tool may include a flow path and a sealing part.
- the flow path may include an inflow port and an outflow port.
- the sealing part may be located continuously with the flow path and may include a male screw and a female screw.
- Screw threads in the male screw may include a first screw thread.
- Screw grooves in the female screw may include a first screw groove. A top portion of the first screw thread may be in contact with a bottom portion of the first screw groove.
- a method of manufacturing a machined product may include preparing a workpiece and a cutting tool in the present disclosure described above, rotating the workpiece or the cutting tool, causing the workpiece and the cutting tool to come into contact with each other, and keeping the workpiece and the cutting tool away from each other.
- FIG. 1 is a perspective view illustrating a cutting tool in a non-limiting aspect of the present disclosure
- FIG. 2 is a diagram illustrating a state in which a flow path is mainly seen through after omitting an insert from FIG. 1 ;
- FIG. 3 is a perspective view when the cutting tool of FIG. 1 is viewed from another direction;
- FIG. 4 is a diagram illustrating a state in which a flow path is mainly seen through after omitting the insert from FIG. 3 ;
- FIG. 5 is an enlarged sectional view illustrating circumstances of a sealing part in the cutting tool of FIG. 1 ;
- FIG. 6 is an enlarged side view illustrating a male screw in a non-limiting aspect of the present disclosure
- FIG. 7 is a sectional view taken along line I-I in FIG. 6 ;
- FIG. 8 is an enlarged sectional view illustrating a female screw in a non-limiting aspect of the present disclosure.
- FIG. 9 is a schematic diagram illustrating a step in a method of manufacturing a machined product in a non-limiting aspect of the present disclosure.
- FIG. 10 is a schematic diagram illustrating a step in the method of manufacturing a machined product in a non-limiting aspect of the present disclosure.
- FIG. 11 is a schematic diagram illustrating a step in the method of manufacturing a machined product in a non-limiting aspect of the present disclosure.
- cutting tools denotes a member that serves for a cutting process by being attached to a tool machine. Therefore, examples of the cutting tools in the present disclosure may include a holder alone besides a structure, such as a drill, in which a cutting edge is integrated with a main body, and a structure including an insert and a holder. A part of the structure, such as the drill, in which the cutting edge is integrated with the main body, a part of the structure including the insert and the holder, and the holder alone, which are exemplified above, may be referred to as a tool body for the sake of convenience.
- the cutting tools in non-limiting aspects of the present disclosure are described in detail below by illustrating the structure including the insert and the holder.
- each of the drawings referred to in the following illustrates, in a simplified form, only main members necessary for describing the non-limiting aspects.
- the cutting tools of the present disclosure are capable of including any structural member not illustrated in the drawings referred to.
- Dimensions of the members in each of the drawings are not ones which faithfully represent dimensions of actual structural members and dimension ratios of these members. These points are also true for a method of manufacturing a machined product described later.
- the cutting tool 1 in a non-limiting aspect is a tool for use in a turning process which is the structure including the inert 2 and the holder 3 .
- the cutting tool 1 may include a flow path 4 and a sealing part 5 as illustrated in FIGS. 2 to 5 . Individual components of the cutting tool 1 are described sequentially below.
- the insert 2 in a non-limiting aspect may be a plate-shaped member and may include an upper surface 21 , a lower surface 22 , a first end surface 23 , a second end surface 24 , a side surface 25 , a through hole 26 , and a cutting edge 27 as illustrated in FIG. 1 .
- the upper surface 21 and the lower surface 22 may have a quadrangular shaped (rectangular shaped) surface.
- quadrangular shape is a concept that may include not only a strict quadrangular shape but also those including slight irregularities or curves.
- the shapes of the upper surface 21 and the lower surface 22 are not limited to the quadrangular shape. These points are also true for the first end surface 23 and the second end surface 24 described later.
- An outer edge at a side of the side surface 25 in each of the upper surface 21 and the lower surface 22 may be taken as a long side, and an outer edge at a side of the first end surface 23 and an outer edge at a side of the second end surface 24 may be taken as a short side.
- At least a part of the upper surface 21 is capable of functioning as a rake surface through which chips flow during a cutting process.
- the terms “the upper surface 21 and the lower surface 22 ” may be used for the sake of convenience and do not indicate an upper direction and a lower direction, respectively.
- the upper surface 21 need not be a surface directed upward when using the cutting tool 1 .
- the first end surface 23 and the second end surface 24 may be surfaces which are respectively located between the upper surface 21 and the lower surface 22 , and which respectively connect to the upper surface 21 and the lower surface 22 .
- the first end surface 23 and the second end surface 24 may be quadrangular shaped surfaces.
- the first end surface 23 may be the surface located at a side of a first end 3 a of the holder 3 described later. At least a part of the first end surface 23 may be capable of functioning as a flank surface during the cutting process.
- the second end surface 24 may be the surface which is opposite to the first end surface 23 and located at a side of the second end 3 b of the holder 3 described later.
- the side surface 25 may be a surface which is located between the upper surface 21 and the lower surface 22 and between the first end surface 23 and the second end surface 24 , and which connects to each of the upper surface 21 and the lower surface 22 .
- the side surface 25 may be a parallelogram shaped surface.
- the term “parallelogram shape” is a concept including a strict parallelogram shape but also those including slight irregularities or curves.
- the shape of the side surface 25 is not limited to the parallelogram shape.
- the insert 2 may include two side surfaces 25 in a non-limiting aspect.
- the through hole 26 may extend between the two side surfaces 25 in a non-limiting aspect illustrated in FIG. 1 .
- the through hole 26 may be a portion that permits insertion of a fixing member for fixing the insert 2 to the holder 3 .
- the fixing member may be a screw 8 in a non-limiting aspect illustrated in FIG. 1 . That is, the cutting tool 1 may include the screw 8 as the fixing member.
- the insert 2 may be fixable to the holder 3 by inserting the screw 8 into the through hole 26 and a screw hole 341 of a pocket 34 described later (refer to FIG. 2 ) in this order, and by fastening them together.
- the fixing member may be a different fixing member instead of the screw 8 . Examples of the different fixing member may include a clamp member.
- the cutting edge 27 may be a portion located in at least a part of a ridge part 28 where two surfaces in the insert 2 intersect with each other.
- the cutting edge 27 may be located throughout the ridge part 28 where the upper surface 21 intersects with the first end surface 23 in a non-limiting aspect illustrated in FIG. 1 .
- the insert 2 may be fixed to the holder 3 in a state in which the cutting edge 27 is protruded at a side of the first end 3 a of the holder 3 .
- the shape of the insert 2 is not limited to that in a non-limiting aspect illustrated in FIG. 1 .
- the side surface 25 may have a triangular shape, and the first end surface 23 may connect to the second end surface 24 on the opposite side of the upper surface 21 .
- the insert 2 may have a shape not including the lower surface 22 in a non-limiting aspect.
- the insert 2 illustrated in FIG. 1 is the plate-shaped member, there is no problem even if the insert 2 is a bar-shaped member.
- cemented carbide or cermet is usable as a material of the insert 2 .
- the cemented carbide may include WC—Co, WC—TiC—Co and WC—TiC—TaC—Co.
- the WC—Co is produced by adding cobalt (Co) powder to tungsten carbide (WC), followed by sintering.
- the WC—TiC—Co may be produced by adding titanium carbide (TiC) to WC—Co.
- the WC—TiC—TaC—Co may be produced by adding tantalum carbide (TaC) to WC—TiC—Co.
- the cermet may be a sintered composite material obtainable by compositing metal into a ceramic ingredient. Examples of the cermet may include ones which are composed mainly of a titanium compound, such as titanium carbide (TiC) and titanium nitride (TiN).
- a surface of the insert 2 may be coated with a coating film.
- composition of the coating film may include titanium carbide (TiC), titanium nitride (TiN), titanium carbonitride (TiCN) and alumina (Al 2 O 3 ).
- TiC titanium carbide
- TiN titanium nitride
- TiCN titanium carbonitride
- Al 2 O 3 alumina
- CVD chemical vapor deposition
- PVD physical vapor deposition
- a length of the long side in the upper surface 21 and the lower surface 22 may be, for example, 12-20 mm.
- a length of the short side in the upper surface 21 and the lower surface 22 may be, for example, 2-8 mm.
- a thickness from the upper surface 21 to the lower surface 22 may be, for example, 6-12 mm.
- the holder 3 may have a shape extending from the first end 3 a to the second end 3 b in a non-limiting aspect as illustrated in FIG. 1 .
- the holder 3 may have a columnar shape.
- the holder 3 in a non-limiting aspect illustrated in FIG. 1 may have a square column shape.
- the term “the square column shape” is a concept including not only a strict square column shape but also those including slight irregularities or curves.
- the shape of the holder 3 is not limited to the square column shape.
- the holder 3 in a non-limiting aspect may include a head 32 located at a side of the first end 3 a and a shank 33 located at a side of the second end 3 b .
- the head 32 may be a portion designed to fix the insert 2 and may include an upper jaw 321 and a lower jaw 322 .
- the shank 33 may be a portion designed to be held by a machine tool.
- the cutting tool 1 in a non-limiting aspect may serve for a cutting process by being attached to the machine tool with the shank 33 interposed therebetween.
- the holder 3 in a non-limiting aspect may include a pocket 34 located at a side of the first end 3 a as illustrated in FIG. 2 .
- the pocket 34 may be a recessed portion of the head 32 at which the insert 2 is located.
- the pocket 34 may include a screw hole 341 engageable with the screw 8 illustrated in FIG. 1 .
- a length of the holder 3 in a direction parallel to the longitudinal direction “a” is, for example, 60-200 mm.
- a width in a direction vertical to the longitudinal direction “a” may be, for example, 6-50 mm.
- the flow path 4 may be located inside the holder 3 and may function as a part that permits flow of a coolant (cooling fluid).
- the holder 3 may include the flow path 4 located therein as in a non-limiting aspect illustrated in FIGS. 2 and 4 .
- the coolant may include water-insoluble cutting fluids and water-soluble cutting fluids.
- the water-insoluble cutting fluids may include oil-based cutting fluids, inert extreme pressure-based cutting fluids and active extreme pressure-based cutting fluids.
- the water-soluble cutting fluids may include emulsion-type, soluble-type and solution-type cutting fluids.
- the coolant may be gases, such as inert gas, instead of liquid.
- the shape of the flow path 4 is not particularly limited insofar as being capable of permitting flow of the coolant.
- the shape of the flow path 4 in a cross section orthogonal to a flow direction of the coolant may be a circular shape in a non-limiting aspect.
- the shape of the flow path 4 in the cross section may be an elliptical shape or polygonal shape.
- An inner diameter of the flow path 4 may be, for example, 1-10 mm.
- the flow path 4 illustrated in FIGS. 2 and 4 may include a first flow path 4 a , a second flow path 4 b , and a third flow path 4 c .
- one end of the first flow path 4 a may be an inflow port 41 described later, and one end of the third flow path 4 c may be an outflow port 42 described later.
- An inner diameter of the first flow path 4 a may be, for example, 5-10 mm.
- An inner diameter of the second flow path 4 b may be, for example, 1-7 mm.
- An inner diameter of the third flow path 4 c may be, for example, 0.8-6 mm.
- the inner diameter of the flow path 4 in a non-limiting aspect illustrated in FIGS. 2 and 4 may decrease stepwise as going from the inflow port 41 toward the outflow port 42 . If the inner diameter of the flow path 4 decreases stepwise, an injection pressure of the coolant can be enhanced efficiently.
- the flow path 4 may include the inflow port 41 and the outflow port 42 .
- the inflow port 41 may be a portion that allows the coolant supplied from the outside to flow into the flow path 4 .
- the inflow port 41 in a non-limiting aspect illustrated in FIGS. 3 and 4 may open into an end surface 35 at a side of the second end 3 b of the holder 3 .
- a position into which the inflow port 41 opens is not limited to the end surface 35 .
- the inflow port 41 may open into one side surface of the holder 3 .
- the number of the inflow ports 41 may be at least one.
- the inflow ports 41 may be included. If there are the inflow ports 41 , the inflow port 41 to be used is selectable depending on a tool machine.
- the outflow port 42 may be a portion that permits an outflow of the coolant toward the insert 2 .
- the outflow port 42 illustrated in FIGS. 1 and 2 may be located at a side of the first end 3 a of the lower jaw 322 and opens so as to be opposed to the insert 2 .
- the position into which the outflow port 42 opens is not limited to the lower jaw 322 .
- the number of the outflow ports 42 may be at least one.
- the outflow ports 42 may be included. If there are the outflow ports 42 , a position into which the outflow port 42 opens is settable depending on the shape of the insert 2 or the like.
- the sealing member 5 may be a portion to be sealed for against leakage of the coolant from the flow path 4 .
- the flow path 4 is formable, for example, by a drilling process using a drill or the like.
- a part of a hole formed by the drilling process, which does not function as the flow path 4 may be sealed with a sealing member in order to prevent the leakage of the coolant in a non-limiting aspect.
- the sealing part 5 corresponds to the part of the hole which does not function as the flow path 4 , and is sealed with the sealing member.
- the number of the sealing parts 5 may be at least one in a non-limiting aspect.
- the flow paths 4 may be included.
- the holes may include openings besides the inflow port 41 and the outflow port 42 .
- the sealing part 5 may be located at the openings other than the inflow port 41 and the outflow port 42 in a non-limiting aspect.
- the flow path 4 in a non-limiting aspect may include the first flow path 4 a , the second flow path 4 b , and the third flow path 4 c as described above.
- Each of the first flow path 4 a , the second flow path 4 b , and the third flow path 4 c may be a hole part having both ends only one of which opens outward in a non-limiting aspect illustrated in FIGS. 2 and 4 .
- One end of the first flow path 4 a opening outward may correspond to the inflow port 41 .
- One end of the third flow path 4 c opening outward may correspond to the outflow port 42 .
- One end of the second flow path 4 b opening outward may correspond to neither the inflow port 41 nor the outflow port 42 .
- the sealing part 5 may be located at an opening portion of the second flow path 4 b in a non-limiting aspect illustrated in FIGS. 2 and 4 .
- the sealing part 5 may be located continuously with the flow path 4 as illustrated in FIGS. 2 and 4 .
- the sealing part 5 may be located on an extended line of the flow path 4 . In this case, the sealing part 5 may not be located on the extended line of the flow path 4 .
- the sealing part 5 may include a male screw 6 and a female screw 7 as illustrated in FIG. 5 .
- the male screw 6 may be attached to the female screw 7 , and the male screw 6 may cooperate with the female screw 7 to function as a sealing mechanism.
- the male screw 6 can be regarded as a non-limiting aspect of the sealing member.
- the female screw 7 may be formed separately from the holder 3 , the female screw 7 may be formed integrally with the holder 3 in a non-limiting aspect illustrated in FIG. 5 .
- the holder 3 may include the hole part located therein and the hole part may include the flow path 4 and the female screw 7 located continuously with the flow path 4 in a non-limiting aspect.
- the cutting tool 1 including the above configuration in a non-limiting aspect may be rephrased as follows. That is, the cutting tool 1 in a non-limiting aspect may include a tool body and a sealing member.
- the tool body may include the hole part located therein.
- the hole part may include the flow path 4 including the inflow port 41 and the outflow port 42 , and the female screw 7 located continuously with the flow path 4 .
- the male screw 7 that is a non-limiting aspect of the sealing member may be attached to the female screw 7 .
- the tool body may be constituted by the insert 2 , the holder 3 , and the fixing member (screw 8 ) in a non-limiting aspect illustrated in FIG. 1 .
- the sealing part 5 may be constituted by the female screw 7 in the tool body, and the male screw 6 that may be the sealing member in a non-limiting aspect illustrated in FIG. 5 .
- the male screw 6 may include screw threads 61 as illustrated in FIGS. 6 and 7 .
- the number of the screw threads 61 may be, for example, 2 to 20.
- a height of the screw threads 61 may be, for example, 0.1-10 mm.
- a distance (pitch) between the screw threads 61 adjacent to each other may be, for example, 0.1-8 mm.
- a length of the male screw 6 in a direction parallel to a longitudinal direction “b” may be, for example, 0.5-160 mm.
- An outer diameter of the male screw 6 may be, for example, 0.5-80 mm.
- the male screw 6 may be, for example, a screw having a head, or a screw having no head.
- Examples of the screw having a head may include countersunk screws, trust screws, and low head screws.
- Examples of the screw having no head may include set screws.
- the male screw 6 may be a set screw in a non-limiting aspect illustrated in FIG. 5 . In this case, the head of the male screw 6 may be less likely to interfere with an apparatus or the like during a cutting process.
- the male screw 6 may include a recess 62 located at one end portion in the longitudinal direction “b”.
- the recess 62 may be a portion designed to engage with a tool used when the male screw 6 is inserted into the female screw 7 and fastened together. Examples of the tool may include hexagon wrenches and screwdrivers.
- Examples of material of the male screw 6 may include inorganic materials, such as metals.
- Examples the metals may include stainless steels and steels.
- the female screw 7 may include screw grooves 71 as illustrated in FIG. 8 .
- the number of the screw grooves 71 may be, for example, 2 to 50.
- a depth of the screw grooves 71 may be, for example, 0.1-10 mm.
- a distance between the screw grooves 71 adjacent to each other may be, for example, 0.1-8 mm.
- a length of the female screw 7 in a direction parallel to a longitudinal direction “c” may be, for example, 0.5-160 mm.
- An inner diameter of the female screw 7 may be, for example, 0.1-80 mm.
- the female screw 7 may be continuous with a surface 31 of the holder 3 .
- the sealing part 5 may include a contact portion 51 as illustrated in FIG. 5 .
- the contact portion 51 may be a portion where at least one top portion 611 of the screw threads 61 of the male screw 6 is in contact with at least one bottom portion 711 of the screw grooves 71 of the female screw 7 .
- the contact portion 51 may be configured so that the screw threads 61 in the male screw 6 may include a first screw thread 61 a , the screw grooves 71 in the female screw 7 may include a first screw groove 71 a , and the top portion 611 of the first screw thread 61 a is may be contact with the bottom portion 711 of the first screw groove 71 a . Because a non-limiting aspect may include the above configuration, the coolant may be less likely to leak from the sealing part 5 , and the male screw 6 may be less likely to come loose by a liquid pressure of the coolant.
- the phrase that “the top portion 611 of the screw thread 61 is in contact with the bottom portion 711 of the screw groove 71 ” may denote that at least a part of the top portion 611 is in contact with at least a part of the bottom portion 711 .
- the contact between the top portion 611 and the bottom portion 711 can be checked, for example, by observing through a microscope a cross section of the sealing part 5 as illustrated in FIG. 5 .
- the female screw 7 may include a first incomplete thread portion 7 a in a non-limiting aspect.
- the screw thread 61 of the male screw 6 may be subjected to plastic deformation along the screw groove 71 of the first incomplete thread portion 7 a of the female screw 7 by inserting the male screw 6 into the female screw 7 , and by fastening the male screw 6 against the first incomplete thread portion 7 a of the female screw 7 in a non-limiting aspect.
- the contact portion 51 may be constituted by an incomplete thread portion of the male screw 6 and the first incomplete thread portion 7 a of the female screw 7 .
- incomplete thread portion may be, for example, a portion not having a complete thread shape as prescribed in JIS B 0176-1:2002.
- a complete thread portion described later may be, for example, a portion having a complete thread shape as prescribed in JIS B 0176-1:2002.
- the complete thread shape need not have a strictly constant height of a screw thread but may include slight variations. Specifically, there may be an approximately 5% difference between one having a greatest height and one having a lowest height among the screw threads.
- the complete thread shape need not have a strictly constant pitch of the screw threads and a strictly constant angle of the screw threads, each of which may have an approximately 5% variation.
- One configuration of the first incomplete thread portion 7 a of the female screw 7 may be, for example, one in which a distance between the screw grooves 71 adjacent to each other is smaller than that in the complete thread portion.
- Another configuration of the first incomplete thread portion 7 a of the female screw 7 may be, for example, one in which a depth of the screw groove 71 is smaller than that in the complete thread portion.
- a filler may be loaded into a portion of the sealing part 5 with which neither the male screw 6 nor the female screw 7 is in contact, namely, a clearance between the male screw 6 and the female screw 7 . If the filler is loaded therein, the coolant may be much less likely to leak from the sealing part 5 , and the male screw 6 may be much less likely to come loose by the liquid pressure of the coolant. Particularly, if the filler is an adhesive, the male screw 6 may be much less likely to come loose by the liquid pressure of the coolant.
- the adhesive may include organic adhesives, such as epoxy resins, acrylic resins and silicone rubbers.
- the height of the screw thread 61 in the male screw 6 may be kept constant, for example, the height of the screw thread 61 in the contact portion 51 may be smaller than a height of the screw thread 61 in portions other than the contact portion 51 .
- a height of the first screw thread 61 a may be smaller than a height of screw threads 61 except for the first screw thread 61 a in the male screw 6 . If a height of the first screw thread 61 a located at the contact portion 51 is relatively low, an outer diameter of the contact portion 51 can be made relatively small. Hence, the coolant may be much less likely to leak from the sealing part 5 .
- the contact portion 51 is not limited to a specific position in the sealing part 5 .
- the contact portion 51 may be located at a side close to the flow path 4 in the sealing part 5 , or may be located at a side farther from the flow path 4 .
- the contact portion 51 is located at the side close to the flow path 4 in the sealing part in a non-limiting aspect illustrated in the drawings.
- the first screw thread 61 a is located at the side close to the flow path 4 in the male screw 6 . If the first screw thread 61 a is located at the side close to the flow path 4 in the male screw 6 , it is easy to attach the male screw 6 to the female screw 7 , while it is possible to stably form the contact portion 51 .
- the side close to the flow path 4 in the sealing part 5 may denote at least a region closer to the flow path 4 than a midportion M of the male screw 6 in a direction “b” along a shaft of the male screw 6 (a longitudinal direction).
- the phrase that “the side farther from the flow path 4 in the sealing part 5 ” may denote at least a region farther from the flow path 4 than the midportion M of the male screw 6 in the direction “b” along the shaft of the male screw 6 .
- the top portion 611 of the screw thread 61 located closest to the side of the flow path 4 among the screw threads 61 in the male screw 6 may be in contact with the bottom portion 711 of the screw groove 71 located closest to the flow path 4 among the screw grooves 71 of the female screw 7 in the contact portion 51 . That is, the first screw thread 61 a may be located at a side closest to the flow path 4 among the screw threads 61 in the male screw 6 . If the first screw thread 61 a is located as described above, the coolant may be less likely to enter the sealing part 5 .
- the contact portion 51 may be configured so that two or more top portions 611 of the screw threads 61 of the male screw 6 may respectively be in contact with two or more bottom portion 711 of the screw threads 71 of the female screw 7 .
- the screw threads 61 may further include a second screw thread 61 b located farther from the flow path 4 than the first screw thread 61 a
- the screw grooves 71 may further include a second screw groove 71 b located farther from the flow path 4 than the first screw groove 71 a
- the top portion 611 of the second screw thread 61 b may be in contact with a bottom portion 711 of the second screw groove 71 b . If the cutting tool 1 includes the above configuration, the effect obtained by the contact portion 51 can be enhanced, and the male screw 6 may be therefore much less likely to come loose by the liquid pressure.
- a height of the second screw thread 61 b is not limited to a specific value.
- the height of the second screw thread 61 b may be smaller than a height of the screw threads 61 except for the first screw thread 61 a and the second screw thread 61 b in the male screw 6
- the height of the first screw thread 61 a may be smaller than the height of the second screw thread 61 b .
- the outer diameter of the contact portion 51 can be made relatively small. If the height of the first screw thread 61 a is smaller than the height of the second screw thread 61 b , it may become easier to attach the male screw 6 to the female screw 7 .
- the sealing part 5 may include the contact portion 51 as illustrated in FIG. 5 .
- the entirety of the sealing part 5 may constitute the contact portion 51 , or alternatively, a part of the sealing part 5 may constitute the contact portion 51 .
- all of the top portions 611 in the screw threads 61 may respectively be in contact with the bottom portions 711 of the screw grooves 71 in the female screw 7 .
- only a part of the top portions 611 in the screw threads 61 may be in contact with the bottom portions 711 of the screw grooves 71 in the female screw 7 .
- a part of the top portions 611 in the screw threads 61 may be kept away from the bottom portions 711 in the female screw 7 in a non-limiting aspect illustrated in FIG. 5 .
- the screw threads 61 may further include a third screw thread 61 c located farther from the flow path 4 than the first screw thread 61 a and the second screw thread 61 b
- the screw grooves 71 may further include a third screw groove 71 c opposed to the third screw thread 61 c
- the top portion 611 of the third screw thread 61 c may be kept away from the bottom portion 711 of the third screw groove 71 c in a non-limiting aspect illustrated in FIG. 5 .
- the cutting tool 1 includes the third screw thread 61 c and the third screw groove 71 c as described above, it may be easy to attach the male screw 6 to the female screw 7 , while it is possible to stably form the contact portion 51 .
- Hardness of the female screw 7 may be higher than hardness of the male screw 6 .
- the screw threads 61 of the male screw 6 may be subjected to plastic deformation and crushed along the screw groove 71 of the female screw 7 , thereby forming the contact portion 51 .
- the male screw 6 and the female screw 7 in the contact portion 51 may become the incomplete thread portions, and the male screw 6 may be therefore less likely to rotate in a loosening direction.
- the hardness of the female screw 7 is higher than the hardness of the male screw 6 , the female screw 7 may be less likely to be subjected to plastic deformation than the male screw 6 .
- the inner diameter of the female screw 7 may be therefore less likely to expand when attaching the male screw 6 to the female screw 7 .
- the coolant may be much less likely to leak from the sealing part 5 .
- the female screw 7 may be, for example, 340-610 in Vickers hardness (hereinafter also referred to as “HV”).
- the male screw 6 may be, for example, 200-280 in HV.
- a difference between the HV of the female screw 7 and the HV of the male screw 6 may be, for example, 100-220.
- the top portion 611 of the first screw thread 61 a may be in contact with the bottom portion 711 of the first screw groove 71 a , while a base bottom portion 63 of the screw threads 61 in the male screw 6 may be kept away from an edge portion 73 of the screw grooves. If the hardness of the female screw 7 is higher than the hardness of the male screw 6 , durability of the male screw 6 can be improved because the base bottom portion 63 is kept away from the edge portion 73 .
- the entirety of the male screw 6 may be located inside the female screw 7 . With this configuration, good operability may be ensured when attaching the holder 3 to a tool machine, and the male screw 6 may be less likely to interfere with an apparatus or the like during a cutting process.
- the sealing part 5 may further include a second incomplete thread portion 7 c located at a more outward region than the contact portion 51 in the female screw 7 .
- the sealing part 5 may further include the second incomplete thread portion 7 c located at a region closer to a side of the surface 31 of the holder 3 than the contact portion 51 in the female screw 7 .
- the second incomplete thread portion 7 c may function as a stopper, and therefore, even if the male screw 6 comes loose, the male screw 6 may be less likely to further come loose by the second incomplete thread portion 7 c .
- the second incomplete thread portion 7 c may be located, for example, over two or more screw grooves 71 .
- the second incomplete thread portion 7 c is not limited to a specific configuration.
- a distance between the screw grooves 71 adjacent to each other in the second incomplete thread portion 7 c may be made smaller than a distance between the screw grooves 71 adjacent to each other in the incomplete thread portion 7 b .
- the screw grooves 71 located at the second incomplete thread portion 7 c may include at least one protrusion 74 .
- a non-limiting aspect illustrated in FIG. 5 may include protrusions 74 . If the second incomplete thread portion 7 c includes the protrusion 74 , the protrusion 74 may function as a stopper.
- the male screw 6 may be much less likely to come loose by the protrusion 74 .
- the flow path 4 may be located on a left side relative to the second incomplete thread portion 7 c , and the protrusion 74 may be protruded leftward from a right side in a non-limiting aspect illustrated in FIG. 5 .
- the male screw 6 may be subjected to a pressing force by the liquid pressure of the coolant.
- the male screw 6 may be subjected to a pressing force from the left side toward the right side in a non-limiting aspect illustrated in FIG. 5 . Therefore, even if the male screw 6 comes loose, the male screw 6 may be designed to be pressed against the protrusion 74 .
- the male screw 6 may be therefore much less likely to come loose by the protrusion 74 .
- the female screw 7 in the sealing part 5 is arranged so that the second incomplete thread portion 7 c , the complete thread portion 7 b and the first incomplete thread portion 7 c may be located in this order from the side of the surface 31 of the holder 3 , the complete thread portion 7 b may be held between the first incomplete thread portion 7 a and the second incomplete thread portion 7 c .
- the male screw 6 may be consequently much less likely to come loose in the sealing part 5 .
- the second incomplete thread portion 7 c may be formed, for example, by inserting the male screw 6 into the female screw 7 and fastening together, and thereafter by deforming the screw groove 71 of the female screw 7 located more outward than the contact portion 51 .
- the deformed part (hereinafter referred to as “the deformed portion” for the sake of convenience) in the screw groove 71 may be formed entirely or partially on an inner peripheral surface of the female screw 7 serving as the second incomplete thread portion 7 c . If the deformed portion of the screw groove 71 is formed entirely on the inner peripheral surface of the female screw 7 , for example, a circular column-shaped tool may be press-fitted into the female screw 7 .
- the deformed portion of the screw groove 71 is formed partially on the inner peripheral surface of the female screw 7 , for example, a part of the screw groove 71 may be cut out by a bar-shaped tool. That is, as illustrated in FIG. 5 , the second incomplete thread portion 7 c may include a cutout portion 72 formed by cutting out a part of the screw groove 71 .
- the male screw 6 when inserting the male screw 6 into the female screw 7 , the male screw 6 may be firstly engaged with the incomplete thread portion 7 b of the female screw 7 (refer to FIG. 8 ). Thereby, shaft misalignment may be less likely to occur when inserting the male screw 6 , thus leading to a smooth insertion of the male screw 6 into the female screw 7 . If the hardness of the female screw 7 is higher than the hardness of the male screw 6 , the screw thread 61 of the male screw 6 can be subjected to plastic deformation along the screw groove 71 of the female screw 7 by inserting the male screw 6 up to the first incomplete thread portion 7 a , and by fastening together as described above. This may make it easier to form the contact portion 51 of the sealing part 5 .
- a part of the complete thread portion used during insertion of the male screw 6 may become the second incomplete thread portion 7 c and the rest becomes the complete thread portion 7 b by inserting the male screw 6 into the female screw 7 and fastening together, and thereafter, by deforming the screw groove 71 of the female screw 7 located more outward than the contact portion 51 (refer to FIGS. 5 and 8 ).
- the method of manufacturing a machined product in a non-limiting aspect of the present disclosure may include the following steps of:
- examples of material of the workpiece 100 prepared in the step (1) may include carbon steel, alloy steel, stainless steel, cast iron and nonferrous metals.
- the cutting tool 1 described above in the step (1) may be prepared.
- the workpiece 100 may be rotated around a rotation axis O of the workpiece 100 as illustrated in FIG. 9 .
- the cutting tool 1 may be relatively brought near the workpiece 100 being rotated by moving the cutting tool 1 in an arrowed direction X 1 . Subsequently, the workpiece 100 may be cut out by causing the workpiece 100 and the cutting edge 27 of the cutting tool 1 to come into contact with each other as illustrated in FIG. 10 . Here, the workpiece 100 may be cut out while causing the coolant to flow out from the outflow port 42 .
- the workpiece 100 and the cutting tool 1 may be kept away from each other to obtain a machined product 110 by moving the cutting tool 1 in an arrowed direction X 2 as illustrated in FIG. 11 .
- the use of the cutting tool 1 makes it possible to carry out a cutting process under cutting conditions involving a high coolant pressure. It is consequently possible to obtain the machined product 110 having a highly accurate machined surface.
- the cutting tool 1 may be rotated in the step (2).
- the workpiece 100 may be brought near the cutting tool 1 in the step (3).
- the workpiece 100 may be kept away from the cutting tool 1 in the step (4). If the cutting process is continued, it is necessary to repeat the step of bringing the cutting edge 27 into contact with different portions of the workpiece 100 , while the workpiece 100 is kept rotating.
- the cutting tools 1 are the tools for use in the turning process in the above non-limiting aspect, the cutting tools 1 may be alternatively tools for use in a milling process.
- the entirety of the male screw 6 may be located inside the female screw 7 in the above non-limiting aspect, a part of the male screw 6 may be exposed from the female screw 7 .
Abstract
Description
- This application is a national stage entry according to 35 U.S.C. 371 of PCT Application No. PCT/JP2017/034653 filed on Sep. 26, 2017, which claims priority to Japanese Application No. 2016-190486 filed on Sep. 29, 2016, which are entirely incorporated herein by reference.
- The present disclosure relates to a cutting tool and a method of manufacturing a machined product using the cutting tool.
- Various cutting tools with a coolant supply mechanism have been proposed. A cutting tool, whose portion being continuous with a flow path located inside a holder is closed by a screw or the like, has also been proposed as discussed in Japanese Unexamined Patent Publication No. 2014-509563 (Patent document 1).
- In a non-limiting aspect of the present disclosure, a cutting tool may include a flow path and a sealing part. The flow path may include an inflow port and an outflow port. The sealing part may be located continuously with the flow path and may include a male screw and a female screw. Screw threads in the male screw may include a first screw thread. Screw grooves in the female screw may include a first screw groove. A top portion of the first screw thread may be in contact with a bottom portion of the first screw groove.
- In a non-limiting aspect of the present disclosure, a method of manufacturing a machined product may include preparing a workpiece and a cutting tool in the present disclosure described above, rotating the workpiece or the cutting tool, causing the workpiece and the cutting tool to come into contact with each other, and keeping the workpiece and the cutting tool away from each other.
-
FIG. 1 is a perspective view illustrating a cutting tool in a non-limiting aspect of the present disclosure; -
FIG. 2 is a diagram illustrating a state in which a flow path is mainly seen through after omitting an insert fromFIG. 1 ; -
FIG. 3 is a perspective view when the cutting tool ofFIG. 1 is viewed from another direction; -
FIG. 4 is a diagram illustrating a state in which a flow path is mainly seen through after omitting the insert fromFIG. 3 ; -
FIG. 5 is an enlarged sectional view illustrating circumstances of a sealing part in the cutting tool ofFIG. 1 ; -
FIG. 6 is an enlarged side view illustrating a male screw in a non-limiting aspect of the present disclosure; -
FIG. 7 is a sectional view taken along line I-I inFIG. 6 ; -
FIG. 8 is an enlarged sectional view illustrating a female screw in a non-limiting aspect of the present disclosure; -
FIG. 9 is a schematic diagram illustrating a step in a method of manufacturing a machined product in a non-limiting aspect of the present disclosure; -
FIG. 10 is a schematic diagram illustrating a step in the method of manufacturing a machined product in a non-limiting aspect of the present disclosure; and -
FIG. 11 is a schematic diagram illustrating a step in the method of manufacturing a machined product in a non-limiting aspect of the present disclosure. - <Cutting Tools>
- The cutting tools in various non-limiting aspects of the present disclosure are described below with reference to the drawings. The term “cutting tools” denotes a member that serves for a cutting process by being attached to a tool machine. Therefore, examples of the cutting tools in the present disclosure may include a holder alone besides a structure, such as a drill, in which a cutting edge is integrated with a main body, and a structure including an insert and a holder. A part of the structure, such as the drill, in which the cutting edge is integrated with the main body, a part of the structure including the insert and the holder, and the holder alone, which are exemplified above, may be referred to as a tool body for the sake of convenience. The cutting tools in non-limiting aspects of the present disclosure are described in detail below by illustrating the structure including the insert and the holder.
- For the sake of description, each of the drawings referred to in the following illustrates, in a simplified form, only main members necessary for describing the non-limiting aspects. Hence, the cutting tools of the present disclosure are capable of including any structural member not illustrated in the drawings referred to. Dimensions of the members in each of the drawings are not ones which faithfully represent dimensions of actual structural members and dimension ratios of these members. These points are also true for a method of manufacturing a machined product described later.
- As illustrated in
FIG. 1 , thecutting tool 1 in a non-limiting aspect is a tool for use in a turning process which is the structure including the inert 2 and theholder 3. Thecutting tool 1 may include aflow path 4 and a sealingpart 5 as illustrated inFIGS. 2 to 5 . Individual components of thecutting tool 1 are described sequentially below. - (Insert)
- The
insert 2 in a non-limiting aspect may be a plate-shaped member and may include anupper surface 21, alower surface 22, afirst end surface 23, asecond end surface 24, aside surface 25, a throughhole 26, and acutting edge 27 as illustrated inFIG. 1 . - The
upper surface 21 and thelower surface 22 may have a quadrangular shaped (rectangular shaped) surface. The term “quadrangular shape” is a concept that may include not only a strict quadrangular shape but also those including slight irregularities or curves. The shapes of theupper surface 21 and thelower surface 22 are not limited to the quadrangular shape. These points are also true for thefirst end surface 23 and thesecond end surface 24 described later. An outer edge at a side of theside surface 25 in each of theupper surface 21 and thelower surface 22 may be taken as a long side, and an outer edge at a side of thefirst end surface 23 and an outer edge at a side of thesecond end surface 24 may be taken as a short side. At least a part of theupper surface 21 is capable of functioning as a rake surface through which chips flow during a cutting process. The terms “theupper surface 21 and thelower surface 22” may be used for the sake of convenience and do not indicate an upper direction and a lower direction, respectively. For example, theupper surface 21 need not be a surface directed upward when using thecutting tool 1. - The
first end surface 23 and thesecond end surface 24 may be surfaces which are respectively located between theupper surface 21 and thelower surface 22, and which respectively connect to theupper surface 21 and thelower surface 22. Thefirst end surface 23 and thesecond end surface 24 may be quadrangular shaped surfaces. Thefirst end surface 23 may be the surface located at a side of afirst end 3 a of theholder 3 described later. At least a part of thefirst end surface 23 may be capable of functioning as a flank surface during the cutting process. Thesecond end surface 24 may be the surface which is opposite to thefirst end surface 23 and located at a side of thesecond end 3 b of theholder 3 described later. - The
side surface 25 may be a surface which is located between theupper surface 21 and thelower surface 22 and between thefirst end surface 23 and thesecond end surface 24, and which connects to each of theupper surface 21 and thelower surface 22. Theside surface 25 may be a parallelogram shaped surface. The term “parallelogram shape” is a concept including a strict parallelogram shape but also those including slight irregularities or curves. The shape of theside surface 25 is not limited to the parallelogram shape. - The
insert 2 may include twoside surfaces 25 in a non-limiting aspect. The throughhole 26 may extend between the twoside surfaces 25 in a non-limiting aspect illustrated inFIG. 1 . The throughhole 26 may be a portion that permits insertion of a fixing member for fixing theinsert 2 to theholder 3. The fixing member may be ascrew 8 in a non-limiting aspect illustrated inFIG. 1 . That is, thecutting tool 1 may include thescrew 8 as the fixing member. Theinsert 2 may be fixable to theholder 3 by inserting thescrew 8 into the throughhole 26 and ascrew hole 341 of apocket 34 described later (refer toFIG. 2 ) in this order, and by fastening them together. The fixing member may be a different fixing member instead of thescrew 8. Examples of the different fixing member may include a clamp member. - The
cutting edge 27 may be a portion located in at least a part of a ridge part 28 where two surfaces in theinsert 2 intersect with each other. Thecutting edge 27 may be located throughout the ridge part 28 where theupper surface 21 intersects with thefirst end surface 23 in a non-limiting aspect illustrated inFIG. 1 . Theinsert 2 may be fixed to theholder 3 in a state in which thecutting edge 27 is protruded at a side of thefirst end 3 a of theholder 3. - The shape of the
insert 2 is not limited to that in a non-limiting aspect illustrated inFIG. 1 . For example, theside surface 25 may have a triangular shape, and thefirst end surface 23 may connect to thesecond end surface 24 on the opposite side of theupper surface 21. Theinsert 2 may have a shape not including thelower surface 22 in a non-limiting aspect. Although theinsert 2 illustrated inFIG. 1 is the plate-shaped member, there is no problem even if theinsert 2 is a bar-shaped member. - For example, cemented carbide or cermet is usable as a material of the
insert 2. Examples of the cemented carbide may include WC—Co, WC—TiC—Co and WC—TiC—TaC—Co. The WC—Co is produced by adding cobalt (Co) powder to tungsten carbide (WC), followed by sintering. The WC—TiC—Co may be produced by adding titanium carbide (TiC) to WC—Co. The WC—TiC—TaC—Co may be produced by adding tantalum carbide (TaC) to WC—TiC—Co. The cermet may be a sintered composite material obtainable by compositing metal into a ceramic ingredient. Examples of the cermet may include ones which are composed mainly of a titanium compound, such as titanium carbide (TiC) and titanium nitride (TiN). - A surface of the
insert 2 may be coated with a coating film. Examples of composition of the coating film may include titanium carbide (TiC), titanium nitride (TiN), titanium carbonitride (TiCN) and alumina (Al2O3). For example, a chemical vapor deposition (CVD) method or a physical vapor deposition (PVD) method is usable as a method of depositing a coating film. - Dimensions of the
insert 2 are settable to, for example, the following values. A length of the long side in theupper surface 21 and thelower surface 22 may be, for example, 12-20 mm. A length of the short side in theupper surface 21 and thelower surface 22 may be, for example, 2-8 mm. A thickness from theupper surface 21 to thelower surface 22 may be, for example, 6-12 mm. - (Holder)
- The
holder 3 may have a shape extending from thefirst end 3 a to thesecond end 3 b in a non-limiting aspect as illustrated inFIG. 1 . In other words, theholder 3 may have a columnar shape. Theholder 3 in a non-limiting aspect illustrated inFIG. 1 may have a square column shape. The term “the square column shape” is a concept including not only a strict square column shape but also those including slight irregularities or curves. The shape of theholder 3 is not limited to the square column shape. - The
holder 3 in a non-limiting aspect may include ahead 32 located at a side of thefirst end 3 a and ashank 33 located at a side of thesecond end 3 b. Thehead 32 may be a portion designed to fix theinsert 2 and may include anupper jaw 321 and alower jaw 322. Theshank 33 may be a portion designed to be held by a machine tool. Thecutting tool 1 in a non-limiting aspect may serve for a cutting process by being attached to the machine tool with theshank 33 interposed therebetween. - The
holder 3 in a non-limiting aspect may include apocket 34 located at a side of thefirst end 3 a as illustrated inFIG. 2 . Thepocket 34 may be a recessed portion of thehead 32 at which theinsert 2 is located. Thepocket 34 may include ascrew hole 341 engageable with thescrew 8 illustrated inFIG. 1 . - For example, steel, cast iron, and aluminum alloy is usable as a material of the
holder 3. Dimensions of theholder 3 are settable, for example, to the following values. A length of theholder 3 in a direction parallel to the longitudinal direction “a” is, for example, 60-200 mm. A width in a direction vertical to the longitudinal direction “a” may be, for example, 6-50 mm. - (Flow Path)
- As illustrated in
FIGS. 2 and 4 , theflow path 4 may be located inside theholder 3 and may function as a part that permits flow of a coolant (cooling fluid). In other words, theholder 3 may include theflow path 4 located therein as in a non-limiting aspect illustrated inFIGS. 2 and 4 . Examples of the coolant may include water-insoluble cutting fluids and water-soluble cutting fluids. Examples of the water-insoluble cutting fluids may include oil-based cutting fluids, inert extreme pressure-based cutting fluids and active extreme pressure-based cutting fluids. Examples of the water-soluble cutting fluids may include emulsion-type, soluble-type and solution-type cutting fluids. Alternatively, the coolant may be gases, such as inert gas, instead of liquid. - The shape of the
flow path 4 is not particularly limited insofar as being capable of permitting flow of the coolant. The shape of theflow path 4 in a cross section orthogonal to a flow direction of the coolant may be a circular shape in a non-limiting aspect. Alternatively, the shape of theflow path 4 in the cross section may be an elliptical shape or polygonal shape. An inner diameter of theflow path 4 may be, for example, 1-10 mm. - In a non-limiting aspect, the
flow path 4 illustrated inFIGS. 2 and 4 may include afirst flow path 4 a, asecond flow path 4 b, and athird flow path 4 c. In a non-limiting aspect illustrated inFIGS. 2 and 4 , one end of thefirst flow path 4 a may be aninflow port 41 described later, and one end of thethird flow path 4 c may be anoutflow port 42 described later. An inner diameter of thefirst flow path 4 a may be, for example, 5-10 mm. An inner diameter of thesecond flow path 4 b may be, for example, 1-7 mm. An inner diameter of thethird flow path 4 c may be, for example, 0.8-6 mm. Specifically, the inner diameter of theflow path 4 in a non-limiting aspect illustrated inFIGS. 2 and 4 may decrease stepwise as going from theinflow port 41 toward theoutflow port 42. If the inner diameter of theflow path 4 decreases stepwise, an injection pressure of the coolant can be enhanced efficiently. - As illustrated in
FIGS. 2 and 4 , theflow path 4 may include theinflow port 41 and theoutflow port 42. Theinflow port 41 may be a portion that allows the coolant supplied from the outside to flow into theflow path 4. Theinflow port 41 in a non-limiting aspect illustrated inFIGS. 3 and 4 may open into an end surface 35 at a side of thesecond end 3 b of theholder 3. A position into which theinflow port 41 opens is not limited to the end surface 35. For example, theinflow port 41 may open into one side surface of theholder 3. The number of theinflow ports 41 may be at least one. Theinflow ports 41 may be included. If there are theinflow ports 41, theinflow port 41 to be used is selectable depending on a tool machine. - The
outflow port 42 may be a portion that permits an outflow of the coolant toward theinsert 2. In a non-limiting aspect, theoutflow port 42 illustrated inFIGS. 1 and 2 may be located at a side of thefirst end 3 a of thelower jaw 322 and opens so as to be opposed to theinsert 2. The position into which theoutflow port 42 opens is not limited to thelower jaw 322. The number of theoutflow ports 42 may be at least one. Theoutflow ports 42 may be included. If there are theoutflow ports 42, a position into which theoutflow port 42 opens is settable depending on the shape of theinsert 2 or the like. - (Sealing Part)
- The sealing
member 5 may be a portion to be sealed for against leakage of the coolant from theflow path 4. Specifically, theflow path 4 is formable, for example, by a drilling process using a drill or the like. A part of a hole formed by the drilling process, which does not function as theflow path 4, may be sealed with a sealing member in order to prevent the leakage of the coolant in a non-limiting aspect. Thus, the sealingpart 5 corresponds to the part of the hole which does not function as theflow path 4, and is sealed with the sealing member. Although depending on the shape of theflow path 4, the number of the sealingparts 5 may be at least one in a non-limiting aspect. Theflow paths 4 may be included. If theflow path 4 has a structure that holes to be formed by a single drilling process are coupled to each other, the holes may include openings besides theinflow port 41 and theoutflow port 42. In this case, the sealingpart 5 may be located at the openings other than theinflow port 41 and theoutflow port 42 in a non-limiting aspect. - The
flow path 4 in a non-limiting aspect may include thefirst flow path 4 a, thesecond flow path 4 b, and thethird flow path 4 c as described above. Each of thefirst flow path 4 a, thesecond flow path 4 b, and thethird flow path 4 c may be a hole part having both ends only one of which opens outward in a non-limiting aspect illustrated inFIGS. 2 and 4 . One end of thefirst flow path 4 a opening outward may correspond to theinflow port 41. One end of thethird flow path 4 c opening outward may correspond to theoutflow port 42. One end of thesecond flow path 4 b opening outward may correspond to neither theinflow port 41 nor theoutflow port 42. Accordingly, the sealingpart 5 may be located at an opening portion of thesecond flow path 4 b in a non-limiting aspect illustrated inFIGS. 2 and 4 . - The sealing
part 5 may be located continuously with theflow path 4 as illustrated inFIGS. 2 and 4 . The sealingpart 5 may be located on an extended line of theflow path 4. In this case, the sealingpart 5 may not be located on the extended line of theflow path 4. The sealingpart 5 may include amale screw 6 and afemale screw 7 as illustrated inFIG. 5 . Themale screw 6 may be attached to thefemale screw 7, and themale screw 6 may cooperate with thefemale screw 7 to function as a sealing mechanism. Here, themale screw 6 can be regarded as a non-limiting aspect of the sealing member. - Although the
female screw 7 may be formed separately from theholder 3, thefemale screw 7 may be formed integrally with theholder 3 in a non-limiting aspect illustrated inFIG. 5 . In other words, theholder 3 may include the hole part located therein and the hole part may include theflow path 4 and thefemale screw 7 located continuously with theflow path 4 in a non-limiting aspect. - The
cutting tool 1 including the above configuration in a non-limiting aspect may be rephrased as follows. That is, thecutting tool 1 in a non-limiting aspect may include a tool body and a sealing member. The tool body may include the hole part located therein. The hole part may include theflow path 4 including theinflow port 41 and theoutflow port 42, and thefemale screw 7 located continuously with theflow path 4. Themale screw 7 that is a non-limiting aspect of the sealing member may be attached to thefemale screw 7. The tool body may be constituted by theinsert 2, theholder 3, and the fixing member (screw 8) in a non-limiting aspect illustrated inFIG. 1 . The sealingpart 5 may be constituted by thefemale screw 7 in the tool body, and themale screw 6 that may be the sealing member in a non-limiting aspect illustrated inFIG. 5 . - The
male screw 6 may includescrew threads 61 as illustrated inFIGS. 6 and 7 . The number of thescrew threads 61 may be, for example, 2 to 20. A height of thescrew threads 61 may be, for example, 0.1-10 mm. A distance (pitch) between thescrew threads 61 adjacent to each other may be, for example, 0.1-8 mm. A length of themale screw 6 in a direction parallel to a longitudinal direction “b” may be, for example, 0.5-160 mm. An outer diameter of themale screw 6 may be, for example, 0.5-80 mm. - The
male screw 6 may be, for example, a screw having a head, or a screw having no head. Examples of the screw having a head may include countersunk screws, trust screws, and low head screws. Examples of the screw having no head may include set screws. Themale screw 6 may be a set screw in a non-limiting aspect illustrated inFIG. 5 . In this case, the head of themale screw 6 may be less likely to interfere with an apparatus or the like during a cutting process. - Alternatively, the
male screw 6 may include arecess 62 located at one end portion in the longitudinal direction “b”. Therecess 62 may be a portion designed to engage with a tool used when themale screw 6 is inserted into thefemale screw 7 and fastened together. Examples of the tool may include hexagon wrenches and screwdrivers. - Examples of material of the
male screw 6 may include inorganic materials, such as metals. Examples the metals may include stainless steels and steels. - The
female screw 7 may includescrew grooves 71 as illustrated inFIG. 8 . The number of thescrew grooves 71 may be, for example, 2 to 50. A depth of thescrew grooves 71 may be, for example, 0.1-10 mm. A distance between thescrew grooves 71 adjacent to each other may be, for example, 0.1-8 mm. A length of thefemale screw 7 in a direction parallel to a longitudinal direction “c” may be, for example, 0.5-160 mm. An inner diameter of thefemale screw 7 may be, for example, 0.1-80 mm. Thefemale screw 7 may be continuous with asurface 31 of theholder 3. - The sealing
part 5 may include acontact portion 51 as illustrated inFIG. 5 . Thecontact portion 51 may be a portion where at least onetop portion 611 of thescrew threads 61 of themale screw 6 is in contact with at least onebottom portion 711 of thescrew grooves 71 of thefemale screw 7. In other words, thecontact portion 51 may be configured so that thescrew threads 61 in themale screw 6 may include afirst screw thread 61 a, thescrew grooves 71 in thefemale screw 7 may include afirst screw groove 71 a, and thetop portion 611 of thefirst screw thread 61 a is may be contact with thebottom portion 711 of thefirst screw groove 71 a. Because a non-limiting aspect may include the above configuration, the coolant may be less likely to leak from the sealingpart 5, and themale screw 6 may be less likely to come loose by a liquid pressure of the coolant. - Specifically, severe cutting conditions have been required in recent years, and accordingly there is a tendency to enhance the liquid pressure of the coolant in order to improve a cooling function. With the configuration described above, the distance between the
screw thread 61 and thescrew groove 71 in thecontact portion 51 can be reduced to make it easier for both to come into close contact with each other. Themale screw 6 may be therefore less likely to come loose even under cutting conditions including, for example, application of liquid pressure of 1 MPa or more. Thecutting tool 1 in a non-limiting aspect is consequently capable of achieving an excellent cooling function even under the severe cutting conditions. - The phrase that “the
top portion 611 of thescrew thread 61 is in contact with thebottom portion 711 of thescrew groove 71” may denote that at least a part of thetop portion 611 is in contact with at least a part of thebottom portion 711. The contact between thetop portion 611 and thebottom portion 711 can be checked, for example, by observing through a microscope a cross section of the sealingpart 5 as illustrated inFIG. 5 . - A state in which the
top portion 611 is in contact with thebottom portion 711 can be established, for example, in the following manner. Thefemale screw 7 may include a firstincomplete thread portion 7 a in a non-limiting aspect. Thescrew thread 61 of themale screw 6 may be subjected to plastic deformation along thescrew groove 71 of the firstincomplete thread portion 7 a of thefemale screw 7 by inserting themale screw 6 into thefemale screw 7, and by fastening themale screw 6 against the firstincomplete thread portion 7 a of thefemale screw 7 in a non-limiting aspect. In other words, thecontact portion 51 may be constituted by an incomplete thread portion of themale screw 6 and the firstincomplete thread portion 7 a of thefemale screw 7. - The term “incomplete thread portion” may be, for example, a portion not having a complete thread shape as prescribed in JIS B 0176-1:2002. A complete thread portion described later may be, for example, a portion having a complete thread shape as prescribed in JIS B 0176-1:2002. However, the complete thread shape need not have a strictly constant height of a screw thread but may include slight variations. Specifically, there may be an approximately 5% difference between one having a greatest height and one having a lowest height among the screw threads. Similarly, the complete thread shape need not have a strictly constant pitch of the screw threads and a strictly constant angle of the screw threads, each of which may have an approximately 5% variation.
- One configuration of the first
incomplete thread portion 7 a of thefemale screw 7 may be, for example, one in which a distance between thescrew grooves 71 adjacent to each other is smaller than that in the complete thread portion. Another configuration of the firstincomplete thread portion 7 a of thefemale screw 7 may be, for example, one in which a depth of thescrew groove 71 is smaller than that in the complete thread portion. - A filler may be loaded into a portion of the sealing
part 5 with which neither themale screw 6 nor thefemale screw 7 is in contact, namely, a clearance between themale screw 6 and thefemale screw 7. If the filler is loaded therein, the coolant may be much less likely to leak from the sealingpart 5, and themale screw 6 may be much less likely to come loose by the liquid pressure of the coolant. Particularly, if the filler is an adhesive, themale screw 6 may be much less likely to come loose by the liquid pressure of the coolant. Examples of the adhesive may include organic adhesives, such as epoxy resins, acrylic resins and silicone rubbers. - Although the height of the
screw thread 61 in themale screw 6 may be kept constant, for example, the height of thescrew thread 61 in thecontact portion 51 may be smaller than a height of thescrew thread 61 in portions other than thecontact portion 51. In other words, a height of thefirst screw thread 61 a may be smaller than a height ofscrew threads 61 except for thefirst screw thread 61 a in themale screw 6. If a height of thefirst screw thread 61 a located at thecontact portion 51 is relatively low, an outer diameter of thecontact portion 51 can be made relatively small. Hence, the coolant may be much less likely to leak from the sealingpart 5. - The
contact portion 51 is not limited to a specific position in the sealingpart 5. Thecontact portion 51 may be located at a side close to theflow path 4 in the sealingpart 5, or may be located at a side farther from theflow path 4. Thecontact portion 51 is located at the side close to theflow path 4 in the sealing part in a non-limiting aspect illustrated in the drawings. In other words, thefirst screw thread 61 a is located at the side close to theflow path 4 in themale screw 6. If thefirst screw thread 61 a is located at the side close to theflow path 4 in themale screw 6, it is easy to attach themale screw 6 to thefemale screw 7, while it is possible to stably form thecontact portion 51. - The phrase that “the side close to the
flow path 4 in the sealingpart 5” may denote at least a region closer to theflow path 4 than a midportion M of themale screw 6 in a direction “b” along a shaft of the male screw 6 (a longitudinal direction). The phrase that “the side farther from theflow path 4 in the sealingpart 5” may denote at least a region farther from theflow path 4 than the midportion M of themale screw 6 in the direction “b” along the shaft of themale screw 6. - The
top portion 611 of thescrew thread 61 located closest to the side of theflow path 4 among thescrew threads 61 in themale screw 6 may be in contact with thebottom portion 711 of thescrew groove 71 located closest to theflow path 4 among thescrew grooves 71 of thefemale screw 7 in thecontact portion 51. That is, thefirst screw thread 61 a may be located at a side closest to theflow path 4 among thescrew threads 61 in themale screw 6. If thefirst screw thread 61 a is located as described above, the coolant may be less likely to enter the sealingpart 5. - The
contact portion 51 may be configured so that two or moretop portions 611 of thescrew threads 61 of themale screw 6 may respectively be in contact with two or morebottom portion 711 of thescrew threads 71 of thefemale screw 7. In other words, thescrew threads 61 may further include asecond screw thread 61 b located farther from theflow path 4 than thefirst screw thread 61 a, thescrew grooves 71 may further include asecond screw groove 71 b located farther from theflow path 4 than thefirst screw groove 71 a, and thetop portion 611 of thesecond screw thread 61 b may be in contact with abottom portion 711 of thesecond screw groove 71 b. If thecutting tool 1 includes the above configuration, the effect obtained by thecontact portion 51 can be enhanced, and themale screw 6 may be therefore much less likely to come loose by the liquid pressure. - In cases where the
screw threads 61 in themale screw 6 include thesecond screw thread 61 b, a height of thesecond screw thread 61 b is not limited to a specific value. For example, the height of thesecond screw thread 61 b may be smaller than a height of thescrew threads 61 except for thefirst screw thread 61 a and thesecond screw thread 61 b in themale screw 6, and the height of thefirst screw thread 61 a may be smaller than the height of thesecond screw thread 61 b. If the height of thesecond screw thread 61 b is smaller than the height of thescrew threads 61 except for thefirst screw thread 61 a and thesecond screw thread 61 b in themale screw 6, the outer diameter of thecontact portion 51 can be made relatively small. If the height of thefirst screw thread 61 a is smaller than the height of thesecond screw thread 61 b, it may become easier to attach themale screw 6 to thefemale screw 7. - The sealing
part 5 may include thecontact portion 51 as illustrated inFIG. 5 . The entirety of the sealingpart 5 may constitute thecontact portion 51, or alternatively, a part of the sealingpart 5 may constitute thecontact portion 51. In other words, all of thetop portions 611 in thescrew threads 61 may respectively be in contact with thebottom portions 711 of thescrew grooves 71 in thefemale screw 7. Alternatively, only a part of thetop portions 611 in thescrew threads 61 may be in contact with thebottom portions 711 of thescrew grooves 71 in thefemale screw 7. - A part of the
top portions 611 in thescrew threads 61 may be kept away from thebottom portions 711 in thefemale screw 7 in a non-limiting aspect illustrated inFIG. 5 . In other words, thescrew threads 61 may further include athird screw thread 61 c located farther from theflow path 4 than thefirst screw thread 61 a and thesecond screw thread 61 b, and thescrew grooves 71 may further include athird screw groove 71 c opposed to thethird screw thread 61 c, and thetop portion 611 of thethird screw thread 61 c may be kept away from thebottom portion 711 of thethird screw groove 71 c in a non-limiting aspect illustrated inFIG. 5 . If thecutting tool 1 includes thethird screw thread 61 c and thethird screw groove 71 c as described above, it may be easy to attach themale screw 6 to thefemale screw 7, while it is possible to stably form thecontact portion 51. - Hardness of the
female screw 7 may be higher than hardness of themale screw 6. With this configuration, when themale screw 6 is inserted into thefemale screw 7 and fastened together, thescrew threads 61 of themale screw 6 may be subjected to plastic deformation and crushed along thescrew groove 71 of thefemale screw 7, thereby forming thecontact portion 51. Thus, themale screw 6 and thefemale screw 7 in thecontact portion 51 may become the incomplete thread portions, and themale screw 6 may be therefore less likely to rotate in a loosening direction. If the hardness of thefemale screw 7 is higher than the hardness of themale screw 6, thefemale screw 7 may be less likely to be subjected to plastic deformation than themale screw 6. The inner diameter of thefemale screw 7 may be therefore less likely to expand when attaching themale screw 6 to thefemale screw 7. Thus, because the outer diameter of thecontact portion 51 is less likely to increase, the coolant may be much less likely to leak from the sealingpart 5. - The
female screw 7 may be, for example, 340-610 in Vickers hardness (hereinafter also referred to as “HV”). Themale screw 6 may be, for example, 200-280 in HV. A difference between the HV of thefemale screw 7 and the HV of themale screw 6 may be, for example, 100-220. These HV values are measurable according to JIS Z 2244:2009. - Like a non-limiting aspect illustrated in
FIG. 5 , thetop portion 611 of thefirst screw thread 61 a may be in contact with thebottom portion 711 of thefirst screw groove 71 a, while abase bottom portion 63 of thescrew threads 61 in themale screw 6 may be kept away from anedge portion 73 of the screw grooves. If the hardness of thefemale screw 7 is higher than the hardness of themale screw 6, durability of themale screw 6 can be improved because thebase bottom portion 63 is kept away from theedge portion 73. - The entirety of the
male screw 6 may be located inside thefemale screw 7. With this configuration, good operability may be ensured when attaching theholder 3 to a tool machine, and themale screw 6 may be less likely to interfere with an apparatus or the like during a cutting process. - The sealing
part 5 may further include a secondincomplete thread portion 7 c located at a more outward region than thecontact portion 51 in thefemale screw 7. In other words, the sealingpart 5 may further include the secondincomplete thread portion 7 c located at a region closer to a side of thesurface 31 of theholder 3 than thecontact portion 51 in thefemale screw 7. With this configuration, the secondincomplete thread portion 7 c may function as a stopper, and therefore, even if themale screw 6 comes loose, themale screw 6 may be less likely to further come loose by the secondincomplete thread portion 7 c. The secondincomplete thread portion 7 c may be located, for example, over two ormore screw grooves 71. - The second
incomplete thread portion 7 c is not limited to a specific configuration. For example, a distance between thescrew grooves 71 adjacent to each other in the secondincomplete thread portion 7 c may be made smaller than a distance between thescrew grooves 71 adjacent to each other in theincomplete thread portion 7 b. In a non-limiting aspect illustrated inFIG. 5 , thescrew grooves 71 located at the secondincomplete thread portion 7 c may include at least oneprotrusion 74. A non-limiting aspect illustrated inFIG. 5 may includeprotrusions 74. If the secondincomplete thread portion 7 c includes theprotrusion 74, theprotrusion 74 may function as a stopper. - Specifically, if the
protrusion 74 is protruded toward theflow path 4, themale screw 6 may be much less likely to come loose by theprotrusion 74. For example, theflow path 4 may be located on a left side relative to the secondincomplete thread portion 7 c, and theprotrusion 74 may be protruded leftward from a right side in a non-limiting aspect illustrated inFIG. 5 . Themale screw 6 may be subjected to a pressing force by the liquid pressure of the coolant. Themale screw 6 may be subjected to a pressing force from the left side toward the right side in a non-limiting aspect illustrated inFIG. 5 . Therefore, even if themale screw 6 comes loose, themale screw 6 may be designed to be pressed against theprotrusion 74. Themale screw 6 may be therefore much less likely to come loose by theprotrusion 74. - If the
female screw 7 in the sealingpart 5 is arranged so that the secondincomplete thread portion 7 c, thecomplete thread portion 7 b and the firstincomplete thread portion 7 c may be located in this order from the side of thesurface 31 of theholder 3, thecomplete thread portion 7 b may be held between the firstincomplete thread portion 7 a and the secondincomplete thread portion 7 c. Themale screw 6 may be consequently much less likely to come loose in the sealingpart 5. - The second
incomplete thread portion 7 c may be formed, for example, by inserting themale screw 6 into thefemale screw 7 and fastening together, and thereafter by deforming thescrew groove 71 of thefemale screw 7 located more outward than thecontact portion 51. The deformed part (hereinafter referred to as “the deformed portion” for the sake of convenience) in thescrew groove 71 may be formed entirely or partially on an inner peripheral surface of thefemale screw 7 serving as the secondincomplete thread portion 7 c. If the deformed portion of thescrew groove 71 is formed entirely on the inner peripheral surface of thefemale screw 7, for example, a circular column-shaped tool may be press-fitted into thefemale screw 7. If the deformed portion of thescrew groove 71 is formed partially on the inner peripheral surface of thefemale screw 7, for example, a part of thescrew groove 71 may be cut out by a bar-shaped tool. That is, as illustrated inFIG. 5 , the secondincomplete thread portion 7 c may include acutout portion 72 formed by cutting out a part of thescrew groove 71. - With the above configuration, it may become easier to form the sealing
part 5. That is, when inserting themale screw 6 into thefemale screw 7, themale screw 6 may be firstly engaged with theincomplete thread portion 7 b of the female screw 7 (refer toFIG. 8 ). Thereby, shaft misalignment may be less likely to occur when inserting themale screw 6, thus leading to a smooth insertion of themale screw 6 into thefemale screw 7. If the hardness of thefemale screw 7 is higher than the hardness of themale screw 6, thescrew thread 61 of themale screw 6 can be subjected to plastic deformation along thescrew groove 71 of thefemale screw 7 by inserting themale screw 6 up to the firstincomplete thread portion 7 a, and by fastening together as described above. This may make it easier to form thecontact portion 51 of the sealingpart 5. - A part of the complete thread portion used during insertion of the
male screw 6 may become the secondincomplete thread portion 7 c and the rest becomes thecomplete thread portion 7 b by inserting themale screw 6 into thefemale screw 7 and fastening together, and thereafter, by deforming thescrew groove 71 of thefemale screw 7 located more outward than the contact portion 51 (refer toFIGS. 5 and 8 ). - <Method of Manufacturing Machined Product>
- Methods of manufacturing a machined product according to non-limiting aspects of the present disclosure are described in detail below with reference to
FIGS. 9 to 11 . - The method of manufacturing a machined product in a non-limiting aspect of the present disclosure may include the following steps of:
- (1) preparing a
workpiece 100 and thecutting tool 1 as illustrated inFIG. 9 ; - (2) rotating the
workpiece 100 or thecutting tool 1; - (3) causing the
workpiece 100 and thecutting tool 1 to come into contact with each other as illustrated in inFIG. 10 ; and - (4) keeping the
workpiece 100 and thecutting tool 1 away from each other as illustrated inFIG. 11 . - Specifically, examples of material of the
workpiece 100 prepared in the step (1) may include carbon steel, alloy steel, stainless steel, cast iron and nonferrous metals. In a non-limiting aspect illustrated inFIG. 9 , thecutting tool 1 described above in the step (1) may be prepared. - In the step (2), the
workpiece 100 may be rotated around a rotation axis O of theworkpiece 100 as illustrated inFIG. 9 . - In the step (3), firstly, the
cutting tool 1 may be relatively brought near theworkpiece 100 being rotated by moving thecutting tool 1 in an arrowed direction X1. Subsequently, theworkpiece 100 may be cut out by causing theworkpiece 100 and thecutting edge 27 of thecutting tool 1 to come into contact with each other as illustrated inFIG. 10 . Here, theworkpiece 100 may be cut out while causing the coolant to flow out from theoutflow port 42. - In the step (4), the
workpiece 100 and thecutting tool 1 may be kept away from each other to obtain a machined product 110 by moving thecutting tool 1 in an arrowed direction X2 as illustrated inFIG. 11 . - With the method of manufacturing a machined product in a non-limiting aspect, the use of the
cutting tool 1 makes it possible to carry out a cutting process under cutting conditions involving a high coolant pressure. It is consequently possible to obtain the machined product 110 having a highly accurate machined surface. - Alternatively, the
cutting tool 1 may be rotated in the step (2). Theworkpiece 100 may be brought near thecutting tool 1 in the step (3). Theworkpiece 100 may be kept away from thecutting tool 1 in the step (4). If the cutting process is continued, it is necessary to repeat the step of bringing thecutting edge 27 into contact with different portions of theworkpiece 100, while theworkpiece 100 is kept rotating. - While the
cutting tools 1 and the methods of manufacturing the machined product 110 in a non-limiting aspect of the present disclosure have been exemplified above. It is, of course, possible to make any arbitrary ones in so far as they do not depart from the gist of the present disclosure. - For example, even though the
cutting tools 1 are the tools for use in the turning process in the above non-limiting aspect, thecutting tools 1 may be alternatively tools for use in a milling process. - Although in the foregoing description, the entirety of the
male screw 6 may be located inside thefemale screw 7 in the above non-limiting aspect, a part of themale screw 6 may be exposed from thefemale screw 7. - Singular forms “a”, “an” and “the” in the entirety of the present disclosure include plural forms thereof unless clearly indicated not being so from the context. Description of the Reference Numerals
-
- 1 cutting tool
- 2 insert
- 21 upper surface
- 22 lower surface
- 23 first end surface
- 24 second end surface
- 25 side surface
- 26 through hole
- 27 cutting edge
- 28 ridge part
- 3 holder
- 3 a first end
- 3 b second end
- 31 surface
- 32 head
- 321 upper jaw
- 322 lower jaw
- 33 shank
- 34 pocket
- 341 screw hole
- 35 end surface
- 4 flow path
- 41 inflow port
- 42 outflow port
- 4 a first flow path
- 4 b second flow path
- 4 c third flow path
- 5 sealing part
- 51 contact portion
- 6 male screw
- 61 screw thread
- 61 a first screw thread
- 61 b second screw thread
- 61 c third screw thread
- 611 top portion
- 62 recess
- 63 base bottom portion
- 7 female screw
- 71 screw groove
- 71 a first screw groove
- 71 b second screw groove
- 71 c third screw groove
- 711 bottom portion
- 72 cutout portion
- 73 edge portion
- 74 protrusion
- 7 a first incomplete thread portion
- 7 b complete thread portion
- 7 c second incomplete thread portion
- 8 screw
- 100 workpiece
- 110 machined product
Claims (15)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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JP2016-190486 | 2016-09-29 | ||
JP2016190486 | 2016-09-29 | ||
JPJP2016-190486 | 2016-09-29 | ||
PCT/JP2017/034653 WO2018062133A1 (en) | 2016-09-29 | 2017-09-26 | Cutting tool and method for manufacturing cut product using same |
Publications (2)
Publication Number | Publication Date |
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US20190232379A1 true US20190232379A1 (en) | 2019-08-01 |
US11154936B2 US11154936B2 (en) | 2021-10-26 |
Family
ID=61760605
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US16/337,464 Active 2038-01-21 US11154936B2 (en) | 2016-09-29 | 2017-09-26 | Cutting tool and method of manufacturing machined product using them |
Country Status (4)
Country | Link |
---|---|
US (1) | US11154936B2 (en) |
JP (1) | JP6691606B2 (en) |
CN (1) | CN109715322B (en) |
WO (1) | WO2018062133A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2023061672A1 (en) * | 2021-10-14 | 2023-04-20 | Hartmetall-Werkzeugfabrik Paul Horn Gmbh | Tool for machining |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE112018006062T5 (en) * | 2017-11-28 | 2020-08-13 | Kyocera Corporation | CUTTING TOOL AND METHOD FOR MANUFACTURING A MACHINED PRODUCT |
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- 2017-09-26 WO PCT/JP2017/034653 patent/WO2018062133A1/en active Application Filing
- 2017-09-26 JP JP2018542575A patent/JP6691606B2/en active Active
- 2017-09-26 CN CN201780056676.4A patent/CN109715322B/en active Active
- 2017-09-26 US US16/337,464 patent/US11154936B2/en active Active
Cited By (1)
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WO2023061672A1 (en) * | 2021-10-14 | 2023-04-20 | Hartmetall-Werkzeugfabrik Paul Horn Gmbh | Tool for machining |
Also Published As
Publication number | Publication date |
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CN109715322B (en) | 2020-10-02 |
CN109715322A (en) | 2019-05-03 |
WO2018062133A1 (en) | 2018-04-05 |
JP6691606B2 (en) | 2020-04-28 |
JPWO2018062133A1 (en) | 2019-06-24 |
US11154936B2 (en) | 2021-10-26 |
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